diff --git a/lib/plugins/tag/include_code.ts b/lib/plugins/tag/include_code.ts
index 914f614f39..83a6529776 100644
--- a/lib/plugins/tag/include_code.ts
+++ b/lib/plugins/tag/include_code.ts
@@ -11,7 +11,10 @@ const rTo = /\s*to:(\d+)/i;
 * Syntax:
 *   {% include_code [title] [lang:language] path/to/file %}
 */
-
+const escapeBackslash = path => {
+  // Replace backslashes on Windows
+  return path.replace(/\\/g, '/');
+};
 export = ctx => function includeCodeTag(args) {
   let codeDir = ctx.config.code_dir;
   let arg = args.join(' ');
@@ -45,7 +48,7 @@ export = ctx => function includeCodeTag(args) {
   // If the language is not defined, use file extension instead
   lang = lang || extname(path).substring(1);
 
-  const src = join(codeDir, path);
+  const src = escapeBackslash(join(codeDir, path));
 
   // If the title is not defined, use file name instead
   const title = match[1] || basename(path);
@@ -71,6 +74,5 @@ export = ctx => function includeCodeTag(args) {
       args: [code, options]
     });
   }
-
   return `<pre><code>${code}</code></pre>`;
 };